Change assert implementation to not depend on a top-level function called 'assert'.

lib/compiler/implementation/scanner/keyword.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * A keyword in the Dart programming language.
  */
 class Keyword implements SourceString {
   static const Keyword BREAK = const Keyword("break");
   static const Keyword CASE = const Keyword("case");
@@ skipping 18 matching lines @@
   static const Keyword SUPER = const Keyword("super");
   static const Keyword SWITCH = const Keyword("switch");
   static const Keyword THIS = const Keyword("this");
   static const Keyword THROW = const Keyword("throw");
   static const Keyword TRUE = const Keyword("true");
   static const Keyword TRY = const Keyword("try");
   static const Keyword VAR = const Keyword("var");
   static const Keyword VOID = const Keyword("void");
   static const Keyword WHILE = const Keyword("while");
 
-  // Pseudo keywords:
+  // Built-in identifiers.

[ahe, 2012/09/05 11:09:54]

Why is it necessary to change this file?

[Lasse Reichstein Nielsen, 2012/09/05 12:51:20]

It isn't. 
I keep getting confused by this "pseudo keyword" name which doesn't appear in
the specification. We don't actually handle built-in identifiers correctly, but
I still like to know which ones are which.

If you don't like it, I can revert it.

   static const Keyword ABSTRACT = const Keyword("abstract", isPseudo: true);
   static const Keyword AS = const Keyword("as", info: AS_INFO, isPseudo: true);
   static const Keyword ASSERT = const Keyword("assert", isPseudo: true);
+  // And "Dynamic".

[Johnni Winther, 2012/09/05 09:07:05]

Is there no const for Dynamic? Don't we need it?

[ngeoffray, 2012/09/05 10:37:10]

What is this comment for?

[Lasse Reichstein Nielsen, 2012/09/05 12:51:20]

Apparently not, to both questions.
This was just a reordering I did for my own sake. We don't handle built-in
keywords properly in the compiler, so it currently doesn't matter if we detect
them. I guess we detect 'Dynamic' magically in the type resolver.

[Lasse Reichstein Nielsen, 2012/09/05 12:51:20]

Reminder that "Dynamic" is a built-in identifier, i.e., the list of declarations
is not complete.

   static const Keyword EXTERNAL = const Keyword("external", isPseudo: true);
   static const Keyword FACTORY = const Keyword("factory", isPseudo: true);
   static const Keyword GET = const Keyword("get", isPseudo: true);
   static const Keyword IMPLEMENTS = const Keyword("implements", isPseudo: true);
+  static const Keyword OPERATOR = const Keyword("operator", isPseudo: true);
+  static const Keyword SET = const Keyword("set", isPseudo: true);
+  static const Keyword STATIC = const Keyword("static", isPseudo: true);
+  static const Keyword TYPEDEF = const Keyword("typedef", isPseudo: true);
+
+  // Pseudo keywords:
   static const Keyword IMPORT = const Keyword("import", isPseudo: true);
   static const Keyword INTERFACE = const Keyword("interface", isPseudo: true);
   static const Keyword LIBRARY = const Keyword("library", isPseudo: true);
   static const Keyword NATIVE = const Keyword("native", isPseudo: true);
-  static const Keyword OPERATOR = const Keyword("operator", isPseudo: true);
   static const Keyword ON = const Keyword("on", isPseudo: true);
-  static const Keyword SET = const Keyword("set", isPseudo: true);
   static const Keyword SOURCE = const Keyword("source", isPseudo: true);
-  static const Keyword STATIC = const Keyword("static", isPseudo: true);
-  static const Keyword TYPEDEF = const Keyword("typedef", isPseudo: true);
 
   static const List<Keyword> values = const <Keyword> [
       AS,
       BREAK,
       CASE,
       CATCH,
       CONST,
       CONTINUE,
       DEFAULT,
       DO,
@@ skipping 188 matching lines @@
   final Keyword keyword;
 
   LeafKeywordState(String syntax) : keyword = Keyword.keywords[syntax];
 
   bool isLeaf() => true;
 
   KeywordState next(int c) => null;
 
   String toString() => keyword.syntax;
 }